Actually in bed, trying to fall asleep, at 23:00 is typical. I'd prefer to get in bed at 22:00 but my wife is a night owl, so this is a compromise for us.
Some sleep deprivation does accumulate to the point that I might turn off my alarm and sleep until 7:00 (when our kids are trained to get up) and skip running some mornings, but I hate doing that; I immediately feel like I've fallen behind schedule so the morning becomes more stressful, and I'm mad that I didn't get any exercise on top of it.
Get ear plugs and a sleep mask. Don't allow her to demand you stay up with her. Although really the compromise should be she should leave the bedroom until she's ready to sleep, but I get some people will not always agree to that not even for the comfort of their partner.
Some sleep deprivation does accumulate to the point that I might turn off my alarm and sleep until 7:00 (when our kids are trained to get up) and skip running some mornings, but I hate doing that; I immediately feel like I've fallen behind schedule so the morning becomes more stressful, and I'm mad that I didn't get any exercise on top of it.